Answer: Long ago, one fox was hungry. He roamed here and there in search of food, and finally, he looked around. He went to a vineyard where he saw ripened grapes. He wanted those grapes because they looked sweet and tasteful. He thought about how tasty and delicious they would be, but the grapes were hanging very high. His mouth watered as he tried to reach them by jumping again and again, but he could not reach the grapes. He exhausted his great efforts and felt disappointed. Finally, he said, "The grapes are sour." He decided not to eat such sour grapes and found another source of food. With that, he walked away.
Explanation: